Ganesan Krishnan
YOU?
Author Swipe
View article: Beetroot Extract as Fluorescence Probes for Copper Ion Detection in Aqueous Solution
Beetroot Extract as Fluorescence Probes for Copper Ion Detection in Aqueous Solution Open
Backgorund of Study: Copper contamination in water poses serious health and environmental risks. Excessive exposure can lead to critical human health issues and is toxic to aquatic organisms. Existing detection techniques are often expensi…
View article: Effect of varying laser fluence on physicochemical characteristics of titania nanoclusters grown via pulse laser ablation in liquid approach
Effect of varying laser fluence on physicochemical characteristics of titania nanoclusters grown via pulse laser ablation in liquid approach Open
Commercial scale production of stable titania nanoclusters (TiO 2 NCs) with controlled physicochemical properties remains challenging. Over the years, to meet the constant industrial demand of different types of pure TiO 2 NCs with desired…
View article: Nonlinear optical characterization of tungsten disulfide and molybdenum disulfide via Z-scan technique
Nonlinear optical characterization of tungsten disulfide and molybdenum disulfide via Z-scan technique Open
Two-dimensional (2D) materials have been widely used in optical applications due to their unique properties such as high transparency, strong light-matter interactions, and tuneable electronic and optical characteristics. In this context, …
View article: Temperature Monitoring of Ti-6Al-4V Alloy in Laser Surface Smoothing with Near-Infrared Spectroscopy and Its Influence on Surface Roughness
Temperature Monitoring of Ti-6Al-4V Alloy in Laser Surface Smoothing with Near-Infrared Spectroscopy and Its Influence on Surface Roughness Open
Laser Surface Smoothing (LSS) is a widely used technique for improving the surface quality of materials, particularly in additive manufacturing (AM), where high surface roughness and porosity are prevalent. Despite the benefits of LSS, the…
View article: Facile synthesis of copper, nickel and their bimetallic nanoparticles: optical and structural characterization
Facile synthesis of copper, nickel and their bimetallic nanoparticles: optical and structural characterization Open
View article: TEMPERATURE MONITORING FOR LASER METAL DEPOSITION USING NEAR-INFRARED SPECTROSCOPY
TEMPERATURE MONITORING FOR LASER METAL DEPOSITION USING NEAR-INFRARED SPECTROSCOPY Open
Temperature monitoring during laser metal deposition (LMD) aids process control to ensure high-quality production. However, the fluctuating emissivity of the melt pool limits the accuracy of the existing non-contact temperature measuring d…
View article: SUPERIOR ANTIBACTERIAL PROPERTIES OF COPPER-BEARING HIGH ENTROPY ALLOY COATED STAINLESS STEEL SURFACE FABRICATED USING LASER CLADDING
SUPERIOR ANTIBACTERIAL PROPERTIES OF COPPER-BEARING HIGH ENTROPY ALLOY COATED STAINLESS STEEL SURFACE FABRICATED USING LASER CLADDING Open
A high-entropy alloy (HEA) coating is applied to a stainless-steel surface using the laser cladding (LC) process. This coating offers a broad-spectrum antibacterial ability and favorable mechanical properties. The release of copper ions fr…
View article: Q-switched Erbium-doped Fiber Laser Utilising a Saturable Absorber Basedon Brass Nanoparticles
Q-switched Erbium-doped Fiber Laser Utilising a Saturable Absorber Basedon Brass Nanoparticles Open
A passively Q-switched erbium-doped fiber laser was successfully demonstrated using brass nanoparticles embedded in Polyvinyl alcohol film as a saturable absorber. The brass nanoparticles were produced by ablating brass target in polyvinyl…
View article: Enhancement of Q-Switched Erbium-Doped Fibre Laser Performance using Graphene Oxide-Calcium Oxide Thin Film Saturable Absorbers
Enhancement of Q-Switched Erbium-Doped Fibre Laser Performance using Graphene Oxide-Calcium Oxide Thin Film Saturable Absorbers Open
This paper presents an experiment utilizing calcium oxide (CaO) from the cuttlefish bone combined with graphene oxide (GO) to create a graphene oxide-calcium oxide (GO-CaO) based saturable absorber (SA) for Q-switched erbium-doped fibre la…
View article: Characterization and Antibacterial Properties of CoCrCuFeNi High Entropy Alloy Nanoparticles Synthesized by Lactobacillus acidophilus
Characterization and Antibacterial Properties of CoCrCuFeNi High Entropy Alloy Nanoparticles Synthesized by Lactobacillus acidophilus Open
Lactobacillus acidophilus (LB) can produce high purity nanoparticles, it is a top-down biological method based on the principle of dividing metal ion bulk precursors into metal atoms, this biosynthesis method was used in this work to synth…
View article: Superior Performances of Q-Switched and Mode-Locked Erbium-doped Fiber Laser using Black Titanium Dioxide Thin-film Saturable Absorbers
Superior Performances of Q-Switched and Mode-Locked Erbium-doped Fiber Laser using Black Titanium Dioxide Thin-film Saturable Absorbers Open
This work reports on the improved Q-switched and mode-locked performances of black titanium dioxide (BTiO2-x) nanoparticles embedded in thin-film composite material as a saturable absorber compared to TiO2 in an erbium-doped fiber laser. T…
View article: Identification of Sudanese Sesame Oil Quality Using a 680 nm Semiconductor Laser Spectrometer and Other Techniques
Identification of Sudanese Sesame Oil Quality Using a 680 nm Semiconductor Laser Spectrometer and Other Techniques Open
View article: Z-Scanning Analysis of Non-Linear Optical Properties of Biodiesel Prepared Via Transesterification Reaction
Z-Scanning Analysis of Non-Linear Optical Properties of Biodiesel Prepared Via Transesterification Reaction Open
View article: Tapered optical fibers using CO<sub>2</sub> laser and their sensing performances
Tapered optical fibers using CO<sub>2</sub> laser and their sensing performances Open
In this paper, we proposed a simple tapering process of optical fibers using controlled CO 2 laser. This is a response to the call for the rapid development of affordable, efficient, and reliable optical sensors. A laser with power of 36 W…
View article: Non-contact salinity measurement using a bifurcated fiber bundle sensing
Non-contact salinity measurement using a bifurcated fiber bundle sensing Open
A non-contact salinity sensor using a bifurcated fiber bundle sensing is proposed. The sensor was operated based on intensity modulation due to the variation of displacement between the tip of the probe with the surface of the sample. The …
View article: Glucose and sucrose analysis in daucus carota extract using optical tapered fibre sensor with GOU-AuNP composite layer synthesization
Glucose and sucrose analysis in daucus carota extract using optical tapered fibre sensor with GOU-AuNP composite layer synthesization Open
Tapered single-mode fibre (SMF) immobilized with glucose oxidase enzyme (GOD) and gold nanoparticles (AuNP) for the recognition of glucose and sucrose elements have been proposed. A tapered fibre was fabricated using a flame heating techni…
View article: Boosting the photocatalytic activity of electrolyte for higher energy efficiency in water electrolysis under influence of an optimal laser
Boosting the photocatalytic activity of electrolyte for higher energy efficiency in water electrolysis under influence of an optimal laser Open
In current study a careful and dedicated observation was done to investigate the effect of the externally applied optical field on electrolysis of water to produce hydrogen. As optical field sources, the green and red diode pumped solid st…
View article: Structural, Morphological and Optical Properties of Zinc Oxide Nanorods prepared by ZnO seed layer Annealed at Different Oxidation Temperature
Structural, Morphological and Optical Properties of Zinc Oxide Nanorods prepared by ZnO seed layer Annealed at Different Oxidation Temperature Open
In this work, zinc oxide (ZnO) nanorods structure in the form of thin film have been grown on soda-lime glass (SLG) substrate incorporating two simple steps. Firstly, ZnO seed layer was pre-deposited onto the SLG substrate by the thermal e…
View article: Distinct optical response of colloidal gold-cinnamon nanocomposites: Role of pH sensitization
Distinct optical response of colloidal gold-cinnamon nanocomposites: Role of pH sensitization Open
Nanocomposites (NCPs) with excellent physical, chemical and optical properties have been broadly used for commercial products and industrial applications. Based on these features of the NCPs, we prepared colloidal gold (Au) and organic cin…
View article: Pulsed Laser Performance of Erbium Doped Fiber Laser Using Titanium Dioxide Nanoparticles as Saturable Absorber
Pulsed Laser Performance of Erbium Doped Fiber Laser Using Titanium Dioxide Nanoparticles as Saturable Absorber Open
In this work, titanium dioxide TiO 2 nanoparticles embedded in thin composite film was used as saturable absorber (SA) in erbium doped fiber (EDF) laser. The thin film was prepared by mixing TiO 2 nanoparticles with polyvinyl alcohol (PVA)…
View article: Optical and Photoacoustic Properties of Laser-Ablated Silver Nanoparticles in a Carbon Dots Solution
Optical and Photoacoustic Properties of Laser-Ablated Silver Nanoparticles in a Carbon Dots Solution Open
This study used the carbon dots solution for the laser ablation technique to fabricate silver nanoparticles. The ablation time range was from 5 min to 20 min. Analytical methods, including Fourier transform infrared spectroscopy (FTIR), UV…
View article: Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene: publisher’s note
Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene: publisher’s note Open
View article: Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene: publisher’s note
Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene: publisher’s note Open
This publisher’s note corrects a figure in [ Opt. Mater. Express 10 , 2227 ( 2020 )] .
View article: Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene
Enhancement of the fluorescence property of carbon quantum dots based on laser ablated gold nanoparticles to evaluate pyrene Open
Gold nanoparticles were prepared in a carbon quantum dots solution using the laser ablation technique to enhance the photoluminescence property of a carbon quantum dots solution. The gold plate was ablated using a Q-Switched Nd:YAG laser a…
View article: Single-Mode Modified Tapered Fiber Structure Functionalized With GO-PVA Composite Layer for Relative Humidity Sensing
Single-Mode Modified Tapered Fiber Structure Functionalized With GO-PVA Composite Layer for Relative Humidity Sensing Open
A sensitive tapered optical fiber sensor incorporating graphene oxide (GO) and polyvinyl alcohol (PVA) composite film for the rapid measurement of changes in relative humidity was proposed and experimentally demonstrated. The sensing princ…
View article: Performance of Single Mode Tapered Optical Fiber Sensor Based on Localized Surface Plasmon Resonance (LSPR) for Various Coating Time
Performance of Single Mode Tapered Optical Fiber Sensor Based on Localized Surface Plasmon Resonance (LSPR) for Various Coating Time Open
Tapered optical fiber (TOF) sensor based on localized surface plasmon resonance is demonstrated for refractive index sensing application. The single-mode fiber (G652D) with 10/125 µm of core/core-cladding diameter was tapered by flame brus…
View article: Comparison of Fiber Bragg Grating based on SMF and MMF over Temperature Sensitivity
Comparison of Fiber Bragg Grating based on SMF and MMF over Temperature Sensitivity Open
We have successfully fabricated and demonstrated a simple, cost-effective and easy to use of fiber Bragg grating (FBG) based on single mode, and multimode fiber which have been employed for temperature monitoring. The study purposely compa…
View article: Non-contact Fiber Optic Displacement Sensor for Sugar Concentration Detection
Non-contact Fiber Optic Displacement Sensor for Sugar Concentration Detection Open
A non-contact fiber optic displacement sensor was used for sugar concentration sensing. A concentric fiber optic bundle and sucrose solutions were used as the fiber probe and sugar samples respectively. Concentration of samples used were i…
View article: The effect of fbg grating lengths for temperature sensing
The effect of fbg grating lengths for temperature sensing Open
In this work, we have successfully fabricated the fiber Bragg grating (FBG) with 1 cm and 3 cm grating length, respectively. The different grating length fabricated by adjusting the slit aperture in order to control UV light transmission w…
View article: Pulse laser ablated growth of Au-Ag nanocolloids: Basic insight on physiochemical attributes
Pulse laser ablated growth of Au-Ag nanocolloids: Basic insight on physiochemical attributes Open
Despite considerable research the evidence around the wide applications in the nanomedicine and nanophotonic area of gold-silver (Au–Ag) nanocolloids remains equivocal and under exploration. Due to their physical properties, enhanced perme…